When your man is in the bathroom brushing his teeth, walk up behind him and wrap your arms around him. Or you could rub his shoulders or his back. Slowly, move your hands down and around until you can slip them into his boxer briefs. Gently caress and massage (or however he likes it!) his goods and as soon as he's finished brushing his teeth, you two can scurry on down the hall to the bedroom.

Have you tried this sneak attack before? Or maybe this is something your partner uses on you?